Fig. 2. Dorsally projecting, but not ventrally projecting, SMNs expressed
scn8a mRNA. GFP+ dorsally projecting SMNs in
Tg(isl1:GFP) embryos expressed scn8a mRNA at 36 (A) and 72
(C) hpf (arrows). Asterisk in A indicates RB cells. (B) By contrast,
ventrally projecting SMNs [GFP+ in Tg(gata2:GFP) embryos] did not
express scn8a at either 36 (B) or 72 (D) hpf. Scale
bar: 25 µm in A,C; 40 µm in B,D.